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Date:      Wed, 26 Aug 2009 14:14:51 -0700
From:      George Davidovich <freebsd@optimis.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: hard disk failure - now what?
Message-ID:  <20090826211451.GA88786@marvin.optimis.net>
In-Reply-To: <20090826204539.GC24590@gizmo.acns.msu.edu>
References:  <1338880b0908241129p75b6845cg26d21804e118364@mail.gmail.com> <20090824223247.GD43410@slackbox.xs4all.nl> <1338880b0908252246s21191e83k7c251366b706532@mail.gmail.com> <20090826180741.GA23120@slackbox.xs4all.nl> <20090826191348.GA85581@marvin.optimis.net> <20090826202347.GA27093@slackbox.xs4all.nl> <20090826204539.GC24590@gizmo.acns.msu.edu>

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On Wed, Aug 26, 2009 at 04:45:40PM -0400, Jerry McAllister wrote:
> On Wed, Aug 26, 2009 at 10:23:47PM +0200, Roland Smith wrote:
> 
> > On Wed, Aug 26, 2009 at 12:13:48PM -0700, George Davidovich wrote: I
> > remember this special non-condictive 3M fluid that can be used to
> > cool electronics. A group of hackers dunked a complete PC minus the
> > case and power supply in this stuff. The fluid itself was cooled
> > with liquid nitrogen. They everclocked it something wicked. Not very
> > practical though. :-)
> 
> A number of supercomputers from Cray and Control Data and maybe some
> other places used this sort of thing on some experimental systems.  I
> don't know if any ever were put in to commercial production.  They
> submerged who boards in to it and then supercooled the fluid.   I
> don't remember the chemical names.  

I do, but have no idea why.

http://en.wikipedia.org/wiki/Perfluorohexane

> The fluid was a relative of Freon and held sufficient levels of oxygen 
> to support lung breathers.  They used to have a tank with a live mouse 
> submerged in it bouncing around and seeming to have no trouble not 
> choking or drowning.  

> A variation of it was also researched as a blood substitute for some
> special medical needs.  I don't know how far that went.    I know it
> is not all fantasy because I saw the live mouse.   

I believe you.  I saw a similar scene in a movie, so I already knew it
had to be true.  Bonus points for anyone that can add to this thread's
collection of off-topic but semi-interesting trivia and name the movie. 

> I didn't try the blood substitute.

	How do you save a drowning mouse?
	Use mouse to mouse resuscitation.

Thanks, I'll be here all week.  Try the veal instead.

-- 
George



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